Table 1. Prevalence of mild cognitive impairment by socio-demographics.

Variable	Unweighted N	Weighted % [95% CI]	Unweighted N with MCI	Weighted % [95% CI] with MCI
Total	1,985	100	655	27.5 [25.5–29.6]
Social Disconnectedness
Average or below	1,072	54.1 [51.2–57.0]	291	23.7 [20.7–26.8]
Above average	913	45.9 [43.0–48.8]	364	32.0 [29.1–34.9]
Perceived Isolation
Average or below	1,139	58.7 [56.2–61.2]	332	23.5 [20.5–26.4]
Above average	846	41.3 [38.8–43.8]	323	33.3 [29.7–36.8]
Gender
Female	1,045	52.3 [49.8–54.8]	320	26.4 [23.3–29.6]
Male	940	47.7 [45.2–50.2]	335	28.7 [25.9–31.5]
Age
65–74 years old	1,190	68.7 [66.3–71.0]	296	20.4 [18.0–22.8]
75 years and older	795	31.3 [29.0–33.7]	359	43.1 [38.9–47.3]
Education
< High school	200	8.6 [6.9–10.2]	147	66.3 [58.9–73.8]
High school or equivalent	481	24.5 [21.6–27.4]	176	30.4 [25.2–35.6]
Vocational certificate, some college, or associate	646	34.4 [31.5–37.3]	226	29.3 [25–33.5]
Bachelors or more	618	32.6 [28.7–36.4]	106	13.2 [10.4–16.1]
Race
White/Caucasian	1,649	87.9 [85.8–90.0]	446	24.1 [21.9–26.3]
Black/African American	217	7.3 [5.6–9.0]	137	61.1 [52.5–69.6]
Other (Asian, Pacific Islander, American Indian or Alaskan Native)	116	4.8 [3.4–6.3]	51	39.0 [27.8–50.3]
Income
$0-$24,999	311	20.2 [16.9–23.4]	167	46.2 [39.7–52.7]
$25,000-$49,999	453	26.5 [23.1–29.7]	155	29.0 [24.9–33.1]
$50,000-$99,999	565	35.6 [32.5–38.6]	128	18.1 [14.4–21.9]
$100,000 or higher	269	17.8 [14.8–20.9]	42	12.6 [8.2–17.0]

MCI = Mild Cognitive Impairment. CI = Confidence Interval.